I recently purchased an HRX Center Weight for my Scoutmaster, so I no longer have any need for this Delrin screw-down clamp. The clamp is in excellent condition without any scratches that I can see. It also includes the little rubber washer. My clamp is identical to the one pictured below. While it was designed for VPI tables, it should work on any table whose spindle uses a 1/4"/20 thread. No fee for Paypal.
